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题目
请教英语大师,为什么句子The man did not wake up until the bed had struck the bed
和句子After he had put it on the floor,he went to sleep again.要用过去完成时呢?全篇都是用个过去时,为什么这两句不能用过去时?菜鸟真心求解

提问时间:2021-03-06

答案
he went to sleep 是一个过去时,在这个过去时之前发生的动作就要用过去完成时,表明他是先把东西放在了地板上,之后才去睡觉的.又如:After he had finished his homework,he was allowed to go and play football.在...
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